Copenhagen has several neighborhoods worth seeing:

Tivoli Gardens, built on the site of former fortifications in the heart of Copenhagen, is adorned with more than 160,000 flowers and 100,000 electric lights. Built in 1843, Tivoli is now home to several restaurants, dance halls, beer gardens, theaters, and lakes.

Amager, is the Manhatten Island of Copenhagen. The narrow harbour separates Amager from the rest of Copenhagen and is connected by 5 bridges. The underground Metro system runs under ground/water to connect Amager with the rest of the city, but you can also go by bus or boat (public transportation). Amager has 3 cityadministrations, Dragør, Tårnby and Copenhagen. The part belonging to Copenhagen also has different neighbourhoods, Christianshavn, Islands Brygge and Sundby. A whole new neighbourhood is being build called Ørestad.

Dragør, a fishing village south of the city, dates back to the 16th century. Step back in time along the cobblestone streets and 65 old red-roofed houses that are designated as national landmarks.

The pedestrian-only street of Strøget begins at Rådhuspladsen, and is flanked by Gammeltorv and Nytorv, “old” and “new” squares. They both produce markets, and stalls selling handmade jewelry, crafts, and knick-knacks. (Strøget actually encompasses five streets: Frederiksberggade, Nygade, Vimmelskaftet, Amagertorv, and Østergade.) If one is interested in funky little shops and atmosphere it is better to stay from the beaten path of Strøget however and explore it's side streets.

The harbor area of Nyhavn is one of the most elegant sections of the city, home to the luxurious Hotel d’Angleterre, the Royal Theater, and many upscale restaurants.

Slotsholmen is where the Bishop Absalon built the city’s first fortress in 1167. It is currently the seat of the Danish parliament and home of Thorvaldsen’s Museum, the Royal Library, the Theater Museum, and the Royal Stables.

Vesterbro is home to funky cafes, hip bars, and ethnic restaurants. Nightlife abounds around Halmtorvet and Istedgade, where several cafes and cocktailbars are open through the night. Vega on Enghavevej just a few steps away from Istedgade is both the coolest and the biggest club in Copenhagen boasting two concertvenues, that are also used for dancing, a lounge cocktailbar and a more downbeat cafe/bar (Ideal Bar).